import re

str = "\/\/www.qyer.com\/u\/11925148"

#"lat":"31.239689","lng":"121.499756"
# pattern = re.compile(r'"lat":".+"', re.I)
# pattern = re.compile(r'"lat":".+",\s*"lng":".+",')
# pattern = re.compile(r'')
# s = pattern.search(str)
str = str.split('/')[-1]
print(str)
